" Live as if you were to die tomorrow. Learn as if you were to live forever.. "
- Mahatma Gandhi
" Live as if you were to die tomorrow. Learn as if you were to live forever.. "
- Mahatma Gandhi
The PageMethods feature enables the using of code-behind page methods on the client side. This is easier and reliable to use and the main feature is it automatically validates the page parameters.
Page Method Example
ASPX
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="PageMethods.aspx.cs" Inherits="PageMethods" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<script type="text/javascript">
function AccessServerSide() {
PageMethods.GetServerSideValue(onSuccess, onFailure);
}
function onSuccess(result) {
alert(result);
}
function onFailure(error) {
alert(error);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="button" value="Click Me" onclick="AccessServerSide()" />
<asp:ScriptManager ID="smPageMethods" runat="server" EnablePageMethods="true"></asp:ScriptManager>
</div>
</form>
</body>
</html>
Code Behind
using System;
using System.Web.Services;
public partial class PageMethods : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
[WebMethod]
public static string GetServerSideValue()
{
return "Yes I can access Server Side Code.";
}
}
Points To remember.
-The Page Method should be static using the attribute [WebMethod].
-The EnablePageMethods property of the script manger should be marked as “True”.
-The call back methods are mandatory to receive the processed result on the client side.